PARDISO PROBLEM

PARDISO PROBLEM

Dimitrios F.'s picture
Dimitrios F.
Thu, 01/17/2013 - 00:05

Dear developer:

I am writing to you in order to inform you about an unusual behavior that pardiso solver exhibit in the latest version of mkl library. More specifically, we use this solver in our finite element code in order to solve the linear system of equations. Up to version ..., we could solve systems that arise when periodic boundary conditions are imposed. Unfortunately, the latest version can not solve them and a NAN appears during back- substitution. We have used both intel and gnu compilers as well as multithreaded and sequential versions without any improvement. Finally, these can be solved with WATSON and HSL solvers.

I am looking forward for your response.

- Dimitrios Fraggedakis

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Gennady Fedorov (Intel)'s picture
Gennady Fedorov (Intel)
Thu, 01/17/2013 - 01:11

the latest version - do you mean version 11.0 update1?

how we can check the problem on our side? can you give us the example? 

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Dimitrios F.'s picture
Dimitrios F.
Fri, 01/18/2013 - 12:51

Here is the Matrix and instructions in the .zip file.

I am running the latest Intel Fortran Compiler Version.

I tried to run all my previous programs that did not crash before, and they crash now after the update. 

Attachments: 

AttachmentSize
Download matrix-sizes.dat.zip934.1 KB
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mecej4's picture
mecej4
Fri, 01/18/2013 - 16:52

I modified the example pardiso_unsym_f.f from the MKL 11.0.1 distribution to read your data files, running under Windows 7 X64 using the 13.0.1.119 compilers (32-bit and 64-bit). Your system was solved successfully and there were no NaNs in the solution vector.

Please provide code that reads your data files and produces the behavior that you described (NaNs in the solution).

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Dimitrios F.'s picture
Dimitrios F.
Mon, 01/21/2013 - 23:43

Well, i foggot to mention thay my operating system is Linux Rocks 6.0 Mamba edition.

I am preparing the code to provide it to you as soon as possible.

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